Members of the Chicago Teachers Union made good on their plans to protest Rahm Emanuel's office over proposed Chicago Pubic School closings Friday evening, landing several protesters in jail after they refused to leave the fifth floor of City Hall outside the mayor's office.

Reuters said more than 200 people came to protest or stage a nearby sit-in as teachers union members, parents of Chicago school students and other activists rallied against the school closings.

Chants to the mayor's office ranged from an creative "Hey Rahm, we’re no fool, you will not close our schools,” to a succinct “We here, Rahm!” said the Sun-Times.

CPS has a Dec. 1 deadline to offer up a list of schools for the chopping block, and early Friday, CPS CEO Barbara Byrd-Bennett announced she would seek an extension the deadline. The teachers union, meanwhile, said it wanted to quash school closings altogether rather than simply delay the decision.

"We have called for a moratorium on all school actions until we have an analysis of the devastating impact these actions have on our students and neighborhoods," said Chicago Teachers Union President Karen Lewis in a statement Friday.

Emanuel has argued "We have more buildings, chairs, tables and desks than we have students in our district," according to Reuters.

Chicago Teachers Union President Karen Lewis, centre, tells reporters at a news conference outside the union's headquarters that the city's 25,000 public school teachers will walk the picket line Monday morning after final-day talks with the Chicago Board of Education failed to reach an agreement over teachers' contracts on Sunday, Sept. 9, 2012 in Chicago. (AP Photo/Sitthixay Ditthavong)